Most HTS codes are assigned from a SKU description long after the engineering decisions that actually determined the right code. SourceOptima reads each drawing — material, geometry, function, process — and proposes the HTS code that matches the part. For the hardest case in trade — the multi-component assembly imported as a single line — the platform walks the BOM, classifies every sub-component, and rolls the whole tree into a defensible landed cost with Section 301 and 232 exposure surfaced at the parent.
A single misclassified code applied across years of imports compounds into millions in overpaid duty — or millions in back-duty exposure when CBP looks back five years. The classification rationale is rarely documented because the engineering context never reaches the trade compliance team in the first place.
Brokers classify from a SKU description in the ERP. The actual drawing — material grade, geometry, intended function — never enters the conversation.
Steel and aluminum content hides inside multi-material assemblies. Chinese-origin sub-components hide inside finished goods. Both add 25% — and both are invisible at the line-item level.
CBP audits look back five years per import. Most companies cannot reproduce why a given HTS code was assigned, much less defend it with engineering evidence.
A material substitution or geometry change can shift the correct HTS code — but trade compliance is rarely informed. The first signal is usually an audit finding.
Same modular plays architecture as the rest of the platform. Turn on the trade plays you need; layer in the rest as the engagement grows.
Code proposed from material, geometry, manufacturing process, and function — extracted directly from the drawing, not the SKU description.
Cross-references supplier country-of-origin and sub-component sourcing against China-origin tariff schedules. Flags exposure at the line-item level, before declaration.
Reads material specs from the drawing — A36, AISI 304, Al 6061 — and flags steel and aluminum content subject to Section 232 duties.
Base unit cost + duty + Section 301 + Section 232 + freight + brokerage = true landed cost per unit. Defensible math, line by line.
Multi-component imports declared as a single line — the hardest case in trade compliance. SourceOptima walks the BOM extracted from the drawing, classifies each sub-component, surfaces hidden 301/232 exposure at the sub-tier, and rolls the whole tree into a defensible parent classification with full audit evidence.
Calculates theoretical weight from drawing geometry. Drawing says 5kg, geom says 8.2kg → caught — and the correct weight goes on the customs declaration.
Every HTS code carries the engineering reasoning that produced it — material, function, manufacturing process. The audit defense exists before the audit notice.
When a drawing rev changes material grade or alters geometry that affects HTS, trade compliance gets an alert at engineering release — not at the next audit cycle.
A multi-component assembly imported under a single HTS code is where every other tariff platform breaks down. Sub-tier suppliers in different countries, mixed materials, embedded steel and aluminum content, sub-components subject to Section 301 — none of it surfaces from a SKU description alone. SourceOptima walks every drawing in the BOM, classifies each sub-component independently, then rolls the whole tree into a defensible landed cost with full audit evidence.
Section 301 (Chinese-origin) and Section 232 (steel and aluminum) tariffs add 10–25% to landed cost — and they apply line-by-line. SourceOptima crosses material specs against Section 232 applicability and supplier country-of-origin against Section 301 schedules at every drawing. Exposure surfaces before the broker files the entry, not after the next audit.
The hardest line in any tariff filing isn't a single part — it's the multi-component assembly nobody can fully decompose. SourceOptima decomposes it, classifies every layer, and ships the audit defense alongside the declaration.— how we design the trade compliance experience
No new system to maintain, no broker handoff to renegotiate. SourceOptima runs over the drawings and HTS history you already have, and surfaces the most defensible classifications first.
Send your drawing archive — assemblies and components alike — and the HTS codes currently on file. SourceOptima walks every BOM, classifies each sub-component in parallel, and ranks the discrepancies by annualized duty exposure. First results within hours.
Top-N line items overpaying duty, ranked by annualized exposure, each with the engineering rationale and audit-ready documentation attached. Something concrete to bring to your next compliance review.
Full landed cost across the import portfolio — base, duty, Section 301, Section 232, freight, brokerage — with the rationale for every code documented and exportable.
New designs flow through trade compliance review at engineering-release time. Material substitutions and revision changes that affect HTS get flagged before the first import, not at the next audit cycle.